title: Randomized controlled study of customized preventive medicine reminder letters in a community practice.
abstract: OBJECTIVE
  To test the effectiveness of customized, family-oriented reminder letters in activating patients to seek appropriate preventive services.
  
  
  METHODS
  Randomized clinical trial. One group received computer-generated, customized letters explaining recommended preventive procedures for each family member. A second group received a form letter listing recommendations for all preventive procedures for all age and sex groups. A third group (control group) received no letters.
  
  
  METHODS
  A private medical centre, without university affiliation, in rural Quebec.
  
  
  METHODS
  From 8770 patients who met study criteria, 719 families were randomly selected. Data were available for 1971 of 1998 patients in these families.
  
  
  METHODS
  The Family Received Index is the proportion of all procedures for which a family was overdue that they received. The Family End-of-study Up-to-date Index is the proportion of procedures for which the family was eligible and for which they were up-to-date at the end of the study.
  
  
  RESULTS
  The Family Received Index for families mailed customized letters was more than double the index for patients not mailed letters (Kruskal-Wallis P = .0139). Comparison of the Family End-of-study Up-to-date indices also demonstrated that families of patients sent customized letters were more likely to be up-to-date than families not sent letters (Kruskal-Wallis P = .0054). No statistically significant difference appeared between the number of preventive measures received by the control group and the form-letter group.
  
  
  CONCLUSIONS
  This study demonstrates a clinically small but statistically significant value to customizing reminder letters.
authors.affiliation: Department of Family Medicine, University of Ottawa.
authors.forename: W E
authors.initials: WE
authors.lastname: Hogg
authors.forename: M
authors.initials: M
authors.lastname: Bass
authors.forename: N
authors.initials: N
authors.lastname: Calonge
authors.forename: H
authors.initials: H
authors.lastname: Crouch
authors.forename: G
authors.initials: G
authors.lastname: Satenstein
mesh_terms: D000704:Analysis of Variance; D005190:Family; D005194:Family Practice; D005260:Female; D006801:Humans; D008297:Male; D011177:Postal Service; D011314:Preventive Health Services / Q000706:statistics & numerical data*; D017010:Reminder Systems